Files
LlamaCasty/ytLive.csproj
T
gramps fd6e02b687 Web source: off-screen WebView2 capture + layout persistence + transparent bg
Bundle exception (2026-08-27): this lands prior-session work plus today's
transparency fix as one commit per creator instruction.

WebView2Manager (new): off-screen WebView2 control parked at -5000/-5000 in
the window's visual tree, captures via CapturePreviewAsync every 100 ms into
a BGRA8 VideoFrame. Source Width/Height sync to the control via
PropertyChanged. JS transparent-background injection runs on every
NavigationStarting/NavigationCompleted so the page's own CSS does not paint
white over the capture.

Transparency fix: DefaultBackgroundColor = System.Drawing.Color.Transparent
set on the WPF control before EnsureCoreWebView2Async. The WPF SDK doc says
the value is forwarded to the controller on init; the IDL (ICoreWebView2-
Controller2) confirms alpha=0 makes the capture alpha-preserving. The
prior-session 'CoreWebView2.BackgroundColor' path was the wrong property
name and has been replaced.

LayoutStore: WebUri column added (idempotent ALTER TABLE) and round-tripped
on save/load (schema v11).

MainViewModel: WebView2Manager constructed on Loaded; loaded web sources
re-registered; Source.WebUri PropertyChanged forwards to manager.

MainWindow: off-screen host Canvas added to visual tree.

Tests: 3 scale-sync + WebView2_DefaultBackgroundColor_Is_Transparent +
LayoutStorePersistenceTests.WebSource_WebUri_Persists. 234/236 pass
(2 pre-existing failures unchanged).

Scale bug (DPI/physical-pixel mismatch) still open.
2026-08-27 08:52:39 -07:00

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XML

<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
<OutputType>WinExe</OutputType>
<TargetFramework>net8.0-windows10.0.19041.0</TargetFramework>
<Nullable>enable</Nullable>
<ImplicitUsings>enable</ImplicitUsings>
<UseWPF>true</UseWPF>
<EnableWindowsTargeting>true</EnableWindowsTargeting>
<ApplicationIcon>Assets\llamacasty-icon.ico</ApplicationIcon>
<AssemblyName>ytLive</AssemblyName>
<RootNamespace>ytLive</RootNamespace>
</PropertyGroup>
<ItemGroup>
<Compile Remove="ytLive.Tests\**" />
<EmbeddedResource Remove="ytLive.Tests\**" />
<None Remove="ytLive.Tests\**" />
<Page Remove="ytLive.Tests\**" />
</ItemGroup>
<ItemGroup>
<Resource Include="Assets\llamacasty-icon.png" />
<Resource Include="Assets\llamacasty-logo.jpg" />
<Resource Include="Assets\starting-background.jpg" />
<Resource Include="Assets\brb-background.jpg" />
<Resource Include="Assets\live-background.jpg" />
<Resource Include="Assets\ending-background.jpg" />
<Resource Include="Assets\chat-background.jpg" />
</ItemGroup>
<ItemGroup>
<None Include="THIRD-PARTY-NOTICES.txt" CopyToOutputDirectory="PreserveNewest" />
</ItemGroup>
<ItemGroup>
<AssemblyAttribute Include="System.Runtime.CompilerServices.InternalsVisibleTo">
<_Parameter1>ytLive.Tests</_Parameter1>
</AssemblyAttribute>
</ItemGroup>
<ItemGroup>
<PackageReference Include="Microsoft.Data.Sqlite" Version="8.0.10" />
<PackageReference Include="NAudio.Wasapi" Version="2.2.1" />
<PackageReference Include="NAudio.WinMM" Version="2.2.1" />
<PackageReference Include="Notification.Wpf" Version="11.0.0" />
<PackageReference Include="SQLitePCLRaw.bundle_e_sqlite3" Version="2.1.12" />
<PackageReference Include="System.Security.Cryptography.ProtectedData" Version="8.0.0" />
<PackageReference Include="Microsoft.Web.WebView2" Version="1.0.2903.40" />
<PackageReference Include="Velopack" Version="1.2.0" />
</ItemGroup>
</Project>